Topic:
Able to segy dump a tape on the SGI, but unable to load the data.

Description:
Data load fails with error message:
 'Expected 3200 bytes in segy header, found 400.
  Non standard segy sample format code
  Override input trc/rec was 0; now is 1
  Err Invalid input data format -1
  Error with line header parameters  
  Status = -1, ffff'.        

Solution:
1) Execute the sili command in an xterm window:
     mt -f /dev/devicename sili

   The sili is a command that suppresses the illegal length indicator.  This 
   occurs with tapes on a 8mm tape drive when a request is made to read fewer 
   bytes per block than was written.  This persists until explicitly turned off 
   or the tape is changed.  

2) If the problem continues, there is a runaway daemon known as mediad which 
   needs to be stopped.  Mediad monitors removable devices such as CDROMs, tape
   drives, and diskettes.  

   In an xterm window:
   ps -ef | grep mediad
   kill -9 process# (associated with mediad)

3) Restart load.
  



Last Modified on: 02-DEC-98